NDIR Dual-Channel CO2 Sensor Module - MS03-010

The MS03-010 CO₂ sensor module uses non-dispersive infrared technology (NDIR), combined with MAXMAC’s patented long optical path chamber structure and precise calibration algorithm. Unified calibration on our self-developed high-precision calibration system ensures excellent accuracy and reliability. With a maintenance-free service life of over 15 years, this module is designed for easy product integration and is widely used in ventilation control for energy savings and indoor air quality improvement, bio-related process monitoring, and personal safety applications.

  • Automotive-grade design for demanding operating conditions
  • High-accuracy detection for wide-range applications
  • Long-life structure for maintenance-free operation
S01 Sensor
Sensor Technology Principle
CO2 Sensor Principle Diagram
CO2 Sensor Technology Principle Illustration
Technical Specifications
CO2 Sensor Module
Measurement Principle
Non-Dispersive Infrared (NDIR)
Measurement Range
400 ~ 10000 ppm / Custom ranges available
Resolution
1 ppm
Measurement Interval
4 s
Accuracy
400-3000 ppm: ± (50 ppm + 3% of reading)
Other ranges: ± (50 ppm + 5% of reading) or ±5%, whichever is greater
Warm-Up Time
≤10 s
Response Time
≤20s (τ63%)
Service Life
>=15 years
Operating Voltage
4.5 ~ 5.5 VDC
Operating Current
Average approx. 16 mA, peak 300mA (duration <10ms / sampling cycle)
Operating Temperature
0℃ ~ 50℃
Operating Humidity
5% ~ 95%RH, non-condensing
Storage Temperature
-30℃ ~ 70℃
Dimensions
33 mm * 20 mm * 9.7 mm (L*W*H)
Weight
≈ 5 g
Interface & Output
UART (Modbus-compatible, supports RS485 extension), PWM
Applications
In-Vehicle Air Purification / Intelligent Cockpit

In-Vehicle Air Purification / Intelligent Cockpit

For automotive HVAC systems and intelligent cockpit applications, this automotive-grade NDIR CO₂ sensor module monitors in-cabin CO₂ concentration in real time for intelligent fresh-air control and automatic recirculation adjustment. It helps prevent fatigue and drowsiness caused by CO₂ buildup, improving driving comfort and safety for passenger cars, commercial vehicles, and new energy vehicles.

Residential/Central Air Conditioning

Residential/Central Air Conditioning

Suitable for CO₂ monitoring in residential and commercial central air conditioning systems, with real-time data feedback for intelligent fresh-air system control. Ventilation volume can be adjusted automatically based on occupancy and indoor air conditions to maintain air quality while improving energy efficiency.

Fresh Air System

Fresh Air System

Used in residential and commercial fresh-air systems to monitor indoor CO₂ concentration in real time as a key basis for ventilation control. Dual-channel NDIR technology ensures long-term stable output and supports continuous operation in high-reliability applications.

Air Purifier

Air Purifier

Suitable for air purification equipment and intelligent building control systems, with dynamic monitoring and analysis of indoor CO₂ concentration. It can serve as a core IAQ parameter to support energy management and environmental optimization strategies.

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